Optimized LEDs Footprinting for Indoor Visible Light Communication Networks

Indoor access to the Internet via visible light communication (VLC) technology is becoming an issue and in this sense system planning requires to look at the number of light-emitting diodes (LEDs) to be used. This task can be accomplished by looking at different performance metrics. We consider the problem of optimal footprint mapping by taking into account the achievable user rate when handover procedures take place due to user mobility. This problem is equivalent to the optimal LEDs placement. In this regard, it is shown that several parameters influence system performance starting from the data rate of download, the speed of the user in the room as well the handover time. In this context, we derive a mathematical tool for VLC network planning and show the performance that can be achieved as a function of different parameters.